Dependable double-junction pH probe technology that's built to last

• Double-junction probe reduces reference contamination, extending longevity  
• Fully waterproof - not just water resistant
• BNC connector allows use with all other compatible Bluelab and Autogrow products 
• 2-metre cable for measuring in hard-to-reach locations 
• Use the included storage cap with KCl to lengthen probe’s lifespan 
• Fast sensor response ensures quick and accurate measurements  
• Polycarbonate housing for long-lasting strength  
• Effective in solutions of 0.2 EC and above